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In this activity, learners watch a figure "magically" float up through the air.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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Create a painting by blowing air out of a straw. Push liquid acrylic paint around on some watercolor paper by aiming short bursts of air onto the paint puddle.

1 cent - $1 per student Ages 4 - 8 45 to 60 minutes
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In this activity on page 14 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners turn plain pieces of recycled plastic into shrunken works of art.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners make cool boxes out of old (or new) greeting cards or postcards.

free Ages 11 - 14 30 to 45 minutes
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Heat makes some materials expand, and it makes others shrink.

1 cent - $1 per student Ages 4 - 11 30 to 45 minutes
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In this activity, learners get hands-on experience with ratios and scaling while making their own jewelry out of recycled plastic containers.

free Ages 11 - 14 45 to 60 minutes
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In this two-part activity, learners investigate buoyancy, density and surface area as well as biodiversity and the relationship between the structure and function of organisms.

Over $20 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners explore the concepts of density and basic chemical reactions as they create a homemade lava lamp effect using water, oil, food coloring, and Alka-Seltzer tablets.

$5 - $10 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners investigate the basic crystal structures that metal atoms form.

$5 - $10 per student Ages 14 - adult 45 to 60 minutes
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In this activity, learners explore the concept of density by pouring 5 different liquids into a jar. Food coloring is added if needed to give each liquid a distinct color.

$1 - $5 per student Ages 4 - 14 5 to 10 minutes
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Learners assemble a hot-air balloon from tissue paper. The heated air (from a heat gun) inside the balloon is less dense than the surrounding air and causes the balloon to float.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes
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In this activity, learners experiment with different variables in making hollandaise sauce to achieve the correct texture and consistency.

$10 - $20 per student Ages 11 - 14 45 to 60 minutes
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In this activity, learners build a hot air balloon using just a few sheets of tissue paper and a hair dryer.

$1 - $5 per student Ages 6 - 18 30 to 45 minutes
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In this math lesson, learners rotate through six estimating and measuring centers. First, learners read the book, "Room for Ripley" by Stuart J.

free Ages 8 - 11 45 to 60 minutes
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This activity shows learners (with adult supervision) how to make a Glitter Globe, a fabulous toy that shimmers when you shake it.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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The goal of this activity is to design, build and test a house or toy for an animal.

$1 - $5 per group Ages 4 - 18 30 to 45 minutes
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In this activity, learners build a paper stellated rhombic dodecahedron, a three-dimensional 12-pointed star.

1 cent - $1 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners are challenged to design and construct a trophy for prize-winning sports equipment.

$5 - $10 per group Ages 8 - 18 10 to 30 minutes
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Learners create beautiful fluid motion. They explore fluid dynamics, surface tension, solubility, and buoyancy while mixing liquids together.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes
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Learners conduct two activities to investigate two properties of liquids: density and viscosity. In a clear container, learners stack 7 different liquids which will layer according to their density.

$5 - $10 per group Ages 11 - 14 30 to 45 minutes